Use user account for authentication

Use user account for authentication and the user.type to display the right menu.
Due to response 404 when the user is not found, an exception in Angular $http code is thrown and we should implement an `interceptor` [see here] (https://docs.angularjs.org/api/ng/service/$http).

For now we check beforehand if a @google domain user is connecting and enable the right menu, then execute the $http call and execute the right code if we get results